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Updated 1/8/2025

Family Aplustridae

INDO-PACIFIC / HAWAII

Hydatina amplustre

Kaloko, Oahu, 6 feet

 

Black Point, Oahu

 

Kapoho tidepool, Hawaii

Kapoho tidepool, Hawaii

 

Diamond Head, Oahu

Diamond Head, Oahu

 

Pupukea tidepool, Oahu

Makapu'u tidepool, Oahu

 
   

SWOLLEN BUBBLE   PŪPŪ LEHOLEHO ‘ŌNI‘ONI‘O 

Common in silty sand under rocks in shallow water during winter months, often found in beach drift or occupied by a hermit crab.  The fresh shell is coated with a thin yellow periostracum.  Shell attains 1.2 inches, 30 mm.  South Africa to Japan, Hawaii, and the Marquesas.